Designed specifically to fit the OEM and aftermarket turbochargers for the Caterpillar C15, C16, C18, 5EK, 6NZ, 14.64L 425-550HP 3406E and more models with the wastegate diaphragm in front of the turbine housing as pictured. Fits OEM turbo 177148and Borg Warner S410G as well as a multitude of other turbocharger variants and replacements (see interchange below). This blanket is made to withstand the elements and keep the heat where it needs to stay. This blanket is made with high density 1″ thick ceramic insulation capable of handling 2500°F direct without breaking down or falling apart. Fits Turbocharger interchange part numbers: 0R7152, 137-4832, 196-5951, 167-9271, 0R7923, 0R7310, 124-3035, 0R6989, 0R7203, 141-8939, 0R7203, 146-4328, 0R7223, 136-6390, 0R6986, 124-3032, 141-8937, 0R7201, 166-6752, 0R7299, 10R-1065, 22-1133, 10R-2962, 10R-3205